From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Test report for the 11-EX New Phantom with a Weymann body, detailing mileage, fuel consumption, and road conditions.
| Identifier | ExFiles\Box 71\3\ scan0150 | |
| Date | 5th April 1926 | |
| COPY. TEST REPORT - 11-EX. NEW PHANTOMCodename for PHANTOM I. WEYMANN BODY. Consec. Day. Agg. Mileage. Total Running Hours. Average Speed. Date. 87 15,309 591 5/60 16.0 5.4.26. MILEAGE. Start. Finish. Days. 6680 6815 135 PETROL. Start. Added. Finish. Used. 4 10 7 11 Oil added. Oil M.P.G. Petrol M.P.G. Running Hours. --- --- 12.3 8 25/60 Route, condition, etc. involuntary stops. Adjustments, work done. remarks on running, etc. Pallanza. Stresa. Conorbio. Roads dry but very bad pot holes and loose stones. Mountain passes part of route. O.S.K. wheel squeaks, apparently loose spokes. No other report. (Sgd.) P.N. Drivers Henry Boot. | ||